Cosmetic creams



Patented Sept. 5, 1950 Maryan Terkel, East, Sydney, New-South Wales, and Henry k Silberman, Meadowbank, neaiL Sydn y, N S u s. tralialassi nors. to National Chemical ProductsPty Limited, East Sydney, New. South; Wales, Australia, a company of New South Wales No Drawing. Application August-9, 1948, Serial- No. 43,344. In Australia ;Qctl?.1h39, 19 45 3-Clai ms. 1 This invention relates to-cosmetic creams of the emulsion type.

Cosmetic creams usually comprise an aqueous emulsion of oleaginous material; such as fats, oils, waxes, fatty alcohols and the like. Various perfumes, antiseptics and medicinalagents are usually added to the emulsion. Cosmetic creams.

arensed, among other things, for smoothingand' softening the skin and'also for relieving chapped skin.

We have now found that if a small amount of a cholesteryl ether is added to a cosmetic cream the properties of the cream, insofar as it affects the skin, are considerably improved. With continued use of such creams containing a cholesteryl ether the skin becomes much softer and smoother than when ordinary cosmetic creams are used. The effect is considerably more than that produced by ordinary cosmetic preparations.

Accordingly, a cosmetic cream in accordance with this invention includes from 0.1% to 8% of a cholesteryl ether.

It is believed that the marked improvement in the properties of a cosmetic cream containing a cholesteryl ether is due in part to the fact that the emulsifying action of the cholesteryl ether provides a particularly fine and effective dispersion of the droplets of oil and the like. Cholesteryl ethers appear to be particularly effective emulsifying agents for the oleaginous materials used in cosmetic creams. Furthermore, cholesterol type compounds are found in the human body and it is possible that the close relationship which exists between the cholesterol type of compounds found in the human body and the cholesteryl ethers included in the cosmetic creams of this invention assists in the assimilation of the preparation into the secretions of the sebaceous glands.

The preferred cholesteryl ether is dicholesteryl ether, which may be obtained as a by-product of the production of cholesterol from animal tissue such as the nervous system of cattle. The improvement in the cosmetic creams is noticeable with as little as 0.1% of dicholesteryl ether added to the cosmetic cream, and it is possible to add as much as 8% with advantage. However, due to the high cost of dicholesteryl ethers the economic range appears to be between 0.1% and 1% and normally the amount of dicholesteryl ether added rarely exceeds 1%.

It is not necessary for the dicholesteryl ether to be pure; and actual practice 9 dicholesteryl ether obtained frompnimal tissue is usually-contaminated with other cholesterol derivativeswhich, however, donot detract from-theteifec tiveness of the; ether.

illustrative-of the invention; the fats, oils: and waxes are heated--= and dicholesterylether, either"- alone; orwith 7 other emulsifying agents; such as lecithine orcholesterolis:added to the hot liquid mixture: Wateris heated t'crapproxisx mately the same temperature as the liquid oleaginous mixture, and the liquid of smaller volume is added to the liquid of larger volume with stirring. The mixture or stirring may be effected in any suitable apparatus, such as an emulsifier, homogeniser or colloid mill.

Examples of cosmetic creams in accordance.

with this invention are described below, but the application of the invention is not limited there- Mineral oil (to be substituted wholly or partly by vegetable oils) Petrolatum v 5 Dicholesterylether 4 Perfume 1 Water ad- 100 Example 2.Tzssue cream Parts Cocoa butter 4.5 Bees wax 12 Cetyl alcohol .4 Mineral oil Lecithine 1 Cholesterol 2 Dicholesteryl ether 8 Preservative 0.2 Perfume 0.8 Water ad Example 3.--Tissae cream Parts Lanolin 35 Petrolatum 43 Dicholesteryl ether 1 Spermacetti wax 5 Perfume 6 Water ad 100 In any of the above examples the dicholesteryl ether can be replaced either by ethyl cholesteryl ether or by methyl cholesteryl ether.

, Dicholesteryl ether possesses numerous advantages. It is itself a very efficient emulsifying agent and is also capable of changing and. improving the properties of cholesterol as an emulsifying agent. Further, when both dicholesteryl ether and cholesterol are employed as emulsifying agents a smaller quantity is necessary than when cholesterol alone is employed. Cosmetic emulsions containing a cholesteryl ether improve the texture of the skin and induce smoothness thereof. When cosmetic creams made in accordance with this invention are rubbed into the skin they practically disappear leaving the skin soft and smooth.

This application is a continuation-in-part of our application Serial No. 695,810, dated September 9, 1946, now abandoned.

We claim:

1. Cosmetic cream comprising an emulsion of oleaginous and aqueous material, and from 0.1% to 8 of a cholesteryl ether.

2. Vanishing cream comprising an aqueous emulsion of steario acid and from 0.1% to 1% of dicholesteryl ether.

3. Cosmetic cream comprising an aqueous emulsion of Wax, fat and oil, and from 0.1 to 1% 0f dicholesteryl ether.

MARYAN TERKEL. HENRYK SILBERMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,985,747 Steindorfi Dec. 25, 1934 OTHER REFERENCES Levin: Journal of the Amer. Chem. $00.; Vol.

65, page 627 (Apr. 1943).

Industrial Chemist; Vol. 13, pages 264, 265 (1937). 

1. COSMETIC CREAM COMPRISING AN EMULSION OF OLEAGINOUS AND AQUEOUS MATERIAL, AND FROM 0.1% TO 8% OF A CHOLESTERYL ETHER. 